Tanjiro and Nezuko both share the upper moon 4 title, Tanjiro has a demonic sword and attacks with it, and nezuko used her powerful claws and kicks, they both are siblings and hunt their pray together, however nezuko will hunt first, and when she gets injured enough, she will start crying loudly and tanjiro will come to help her, tanjiro is the primary holder of upper moon 4 and is more powerful than nezuko, they both have fangs and claws, have awakened forms, they eat humans. cant go in sun.